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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 533 · 40 questions
TalentJR

The fast method (Halve first): Halve the number. × 5: multiply the half by 10. × 50: multiply the half by 100. Odd number? Its half ends in .5 — 43 → 21.5 — and × 10 moves the point: 215.

NameDateTime takenScore ___ / 40
  1. 1.96 × 50 =
  2. 2.61 × 50 =
  3. 3.57 × 5 =
  4. 4.44 × 5 =
  5. 5.91 × 50 =
  6. 6.17 × 50 =
  7. 7.86 × 50 =
  8. 8.98 × 5 =
  9. 9.24 × 50 =
  10. 10.86 × 5 =
  11. 11.64 × 50 =
  12. 12.29 × 50 =
  13. 13.45 × 50 =
  14. 14.90 × 50 =
  15. 15.40 × 50 =
  16. 16.46 × 5 =
  17. 17.67 × 50 =
  18. 18.14 × 5 =
  19. 19.18 × 50 =
  20. 20.41 × 50 =
  21. 21.15 × 5 =
  22. 22.32 × 50 =
  23. 23.86 × 50 =
  24. 24.42 × 5 =
  25. 25.89 × 5 =
  26. 26.17 × 50 =
  27. 27.34 × 50 =
  28. 28.70 × 5 =
  29. 29.28 × 50 =
  30. 30.26 × 5 =
  31. 31.25 × 5 =
  32. 32.22 × 5 =
  33. 33.95 × 5 =
  34. 34.55 × 5 =
  35. 35.38 × 5 =
  36. 36.78 × 50 =
  37. 37.67 × 50 =
  38. 38.66 × 50 =
  39. 39.40 × 5 =
  40. 40.13 × 5 =

Answer key

  1. 4800
  2. 3050
  3. 285
  4. 220
  5. 4550
  6. 850
  7. 4300
  8. 490
  9. 1200
  10. 430
  11. 3200
  12. 1450
  13. 2250
  14. 4500
  15. 2000
  16. 230
  17. 3350
  18. 70
  19. 900
  20. 2050
  21. 75
  22. 1600
  23. 4300
  24. 210
  25. 445
  26. 850
  27. 1700
  28. 350
  29. 1400
  30. 130
  31. 125
  32. 110
  33. 475
  34. 275
  35. 190
  36. 3900
  37. 3350
  38. 3300
  39. 200
  40. 65

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